using System;
using System.Linq;
using AK.Wwise;
using UnityEngine;
using Wwise.Wooduan.Core;
using Wwise.Wooduan.Tools;

namespace Wwise.Wooduan.Components
{
    public enum AudioEventAction
    {
        Play,
        Stop
    }
    
    // Place to save audio event and frame mapping
    [Serializable]
    public class LegacyAnimationAudioEvent
    {
        public string clipName;
        public int frame;
        public AK.Wwise.Event audioEvent;
        public AudioEventAction action;
    }
    
    /// <summary>
    /// Post or stop Wwise events with legacy animation component.
    /// </summary>
    [AddComponentMenu("Wwise/LegacyAnimationSound")]
    [RequireComponent(typeof(Animation))]
    [DisallowMultipleComponent]
    public class LegacyAnimationSound : AkComponent
    {
        public int frameRate = 60;
        public GameObject emitter;
        public LegacyAnimationAudioEvent[] audioEvents = new LegacyAnimationAudioEvent[0];

        private void Start()
        {
            if (IsValid())
                RegisterEvents();
            if (!emitter)
                emitter = gameObject;
        }

        // temporarily add events to animation clip when initialized
        private void RegisterEvents()
        {
            var anim = GetComponent<Animation>();
            if (!anim) 
                return;
            
            foreach (var evt in audioEvents)
            {
                var clip = anim.GetClip(evt.clipName);
                if (!clip) continue;
                var existingEvent = clip.events.FirstOrDefault(e => e.stringParameter == evt.audioEvent.Name);
                if (existingEvent != null) continue;
                var newEvent = new AnimationEvent
                {
                    time = evt.frame * 1f / frameRate, 
                    stringParameter = evt.audioEvent.Name
                };
                switch (evt.action)
                {
                    case AudioEventAction.Play:
                        newEvent.functionName = "Play";
                        break;
                    case AudioEventAction.Stop:
                        newEvent.functionName = "Stop";
                        break;
                }
                clip.AddEvent(newEvent);
            }
        }

        public void Play(string eventName)
        {
            if (eventName.StartsWith("Music_"))
                AudioManager.PlayMusic(eventName, emitter, AudioTriggerSource.AnimationSound);
            else if (eventName.StartsWith("Vo_"))
                AudioManager.PlayVoice(eventName, emitter, AudioTriggerSource.AnimationSound);
            else
                AudioManager.PlaySound(eventName, emitter, AudioTriggerSource.AnimationSound);
        }
        
        public void Stop(string eventName)
        {
            if (eventName.StartsWith("Music_"))
                AudioManager.StopMusic(emitter, AudioTriggerSource.AnimationSound);
            else
                AudioManager.StopEvent(eventName, emitter, 0.1f, AudioTriggerSource.AnimationSound);
        }
        

        public override bool IsValid()
        {
            return audioEvents.Any(e => e.audioEvent.IsValid());
        }
    }
}